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參數資料
| 型號： | SNJ54ACT1284W |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 7-BIT BUS INTERFACES WITH 3-STATE OUTPUTS |
| 中文描述： | 7位總線接口與三態(tài)輸出 |
| 文件頁數： | 3/12頁 |
| 文件大小： | 291K |
| 代理商： | SNJ54ACT1284W |
SCAS459D NOVEMBER 1994 REVISED OCTOBER 2003
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
CC
B-port input and output voltage range, V
I
and V
O
(see Notes 1 and 2)
A-port input and output voltage range, V
I
and V
O
(see Note 1)
Input clamp current, I
IK
(V
I
< 0 or V
I
> V
CC
)
Output clamp current, I
OK
(V
O
< 0 or V
O
> V
CC
)
Continuous output current, I
O
(V
O
= 0 to V
CC
)
Continuous current through V
CC
or GND
Package thermal impedance,
θ
JA
(see Note 3): DB package
0.5 V to 7 V
2 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . .
0.5 V to V
CC
+ 0.5 V
±
20 mA
±
50 mA
±
50 mA
±
200 mA
70
°
C/W
58
°
C/W
60
°
C/W
83
°
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DW package
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NS package
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PW package
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES:
1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The ac input voltage pulse duration is limited to 20 ns if the input voltage goes more negative than 0.5 V.
3. The package thermal impedance is calculated in accordance with JESD 51-7.
65
°
C to 150
°
C
recommended operating conditions (see Note 4)
SN54ACT1284
MIN
SN74ACT1284
MIN
UNIT
MAX
MAX
VCC
VIH
VIL
VI
VO
Supply voltage
4.7
5.5
4.7
5.5
V
High-level input voltage
2
2
V
Low-level input voltage
0.8
0.8
V
Input voltage
0
VCC
5.5
0
VCC
5.5
V
Open-drain output voltage
HD low
0
0
V
IOH
High-level output current
B port, HD high
14
14
mA
A port
4
4
IOL
Low-level output current
B port
14
14
mA
A port
4
4
TA
Operating free-air temperature
55
125
0
70
°
C
NOTE 4: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs
, literature number SCBA004.
2
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